1 Centrifuge New Technology 1.1 Temperature Refrigeration When the rotor rotation speed, air friction and heat, the rotor temperature increases, the sample tube in the temperature will rise. As the temperature-sensitive biological samples. Basic requirements to sustain the temperature centrifuge experiment four . No Personal computer Intelligent control technology, it is impossible to achieve the precision of ± 1 . As a result, the centrifugal chiller cavity cooling, and to cool the rotor, cooling the sample temperature. Nonetheless, rotation of the rotor measuring the actual temperature is really difficult, at home and abroad have adopted from the bottom of the centrifuge rotor chamber set temperature closer to deal Sensor Indirect measurement of rotor temperature. Exactly where T sample = T + T compensation chamber. T kind of compensation they and the rotor, the speed and run time.
1.two Brushless Motor Direct drive
Centrifuge Is a high-speed motor with rotor rotation. Past the motor is DC motor with carbon brushes, carbon brush wear centrifuges running, bring sparks and noise or vibration, and there is life, every little thing will have to replace the carbon brush run again. Much more serious is the carbon brush wear triggered toner dust pollution, not only pollute the centrifuge, but also polluted the atmosphere, this pollution on the well being sector is not appropriate.
1.3 Display digital technology Standard simulation Table Is in the form of screw knob to pick operating parameters (such as speed, temperature and time) to dial the pointer to display data. The disadvantages are: choice parameters and the information readings and the readings by the operator of a lot more than human disturbance, poor manage accuracy. And every operation need to be so poor repeatability. Although the figures show some centrifuge (such as knob and digital show chosen value), although there are improvements in reading, but the worth remains unchanged principles simulation methods figures show the common form of the interface is friendly, Keyboard Operation, digital display, programmable personal computer manage the complete operation, the core of the intelligent manage is achieved by a pc. All the parameters needed for centrifuge operation (such as speed, temperature, time, addition and subtraction price files, and so forth.), keyboard input, and digital displayed, so pick the operating parameters and to study a really little number of errors. Also because it is programmable operation, can be compiled into a set of operating parameters number, access to use. How
2 Safety Making use of centrifuges two.1 installed appropriately (1) Power provide Voltage: voltage fluctuations within +10% to meet national requirements, or a number of producers of centrifuges is not standard operation. If the voltage fluctuations in the above proposal with the regulator for the energy line.
(two) Ground To prison: the power supply space Cloth Line to meet the needs. China is a 3-phase four-wire method. Three-phase three-phase industrial power in the use of three-phase power line and ground zero when the separation is far more crucial is whether or not it is 3-phase industrial energy firms or the basic single-phase energy businesses or, ground should be reliable, so as to stay away from leakage , ground can not be connected to the heating pipe, water pipe.
(three) ground to smooth, firm: big-scale centrifuge run, moving the installation place Floor Should be powerful, to make sure regular operation of centrifuge rotors, not Xianao in, fixed of ground should be flat and firm.
(four) to discover a excellent level: the level to find a much more accurate small scale, centrifuge lid open, hunting at the spindle level, by adjusting the 4 wheels beside the adjustment Bolt The twist came to a very good level of focus which a foot can not dashed.
2.2 installed like to locate a balance
In the design and style and manufacture of centrifuge, the rotor imbalance brought on by processing errors, has created a dynamic balance test of the remedies, but all centrifuges, has allowed the installation of its kind of unbalance. Centrifuge Centrifuge manufacturers in order to limit the maximum allowable imbalance indicator compete with other companies, as far as possible given greater worth. In this huge value, the centrifuges can operate, but then the unbalanced force generated n times per minute, a rude shock frequency Bearing And assistance the centrifuge is subject to injury. Consequently, users of those pricey centrifuges, to find a great balance as far as feasible following the centrifugation, the centrifuge good life.
two.three cavity clean water centrifugation
Centrifuge operation utilizing cooling water as the air in the centrifugal chamber frost, down into the water soon after the frost. Most of the low-speed big-capacity centrifuge abroad, there is no drainage hole, centrifugal chamber in a greater accumulation of water. At this point, the user must get rid of the rotors on their own, clean water. When you reinstall the rotor have to be fitted properly to prevent an accident.
two.four Aluminum Alloy can not be topic to corrosion
Centrifuge rotor generally is aluminum, when the intensity decreased by corrosion, straightforward to the accident. Susceptible to corrosion of aluminum alloy liquid, right after washed blowing Fans Drying, or inverted for some time, did confirm to use. Some imported blood bank centrifuge, 6 aluminum Cup 6 years due care is not plastic. Care should be place in plastic bags, to keep away from straight on the aluminum cup. Note regardless of whether the crack in vitro. If the test tube (in specific, repeated use of the test tube) has cracks, should not use, or test-tube rupture in use will lead to the loss of rotor balance, can lead to broken shafts and other critical accident.
2.5 off-axis incident
Rotor placed no good, or the installation of sample imbalance more than also huge, centrifuge begin. Despite the fact that modern centrifuges are unbalanced import protection, that is, when the imbalance exceeds a certain limit, need to automatically power off, make centrifuge stall. Nevertheless, in these circumstances, is late, there will be a vicious accident. 1 serious accident off-axis, due to the sudden off-axis higher-speed rotation, centrifugal rotor no help in the parades around wild guesses in the centrifugal chamber, centrifuge machine can turn 270 ° angle. At this point, if subsequent to personnel or gear will outcome in casualties and damage gear accident.
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